./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d6d4a223111603731feae03c3b8e999e521ed8b7a92f24be8e01d0595b640900 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:03:13,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:03:13,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:03:13,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:03:13,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:03:13,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:03:13,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:03:13,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:03:13,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:03:13,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:03:13,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:03:13,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:03:13,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:03:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:03:13,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:03:13,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:03:13,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:03:13,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:03:13,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:03:13,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:03:13,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:03:13,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:03:13,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:03:13,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:03:13,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:03:13,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:03:13,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:03:13,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:03:13,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:03:13,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:03:13,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:03:13,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:03:13,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:03:13,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:03:13,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:03:13,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:03:13,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:03:13,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:03:13,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:03:13,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:03:13,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:03:13,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 01:03:13,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:03:13,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:03:13,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:03:13,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:03:13,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:03:13,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:03:13,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:03:13,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:03:13,734 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:03:13,734 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:03:13,735 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:03:13,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:03:13,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:03:13,736 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:03:13,736 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:03:13,736 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:03:13,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:03:13,737 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:03:13,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:03:13,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:03:13,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:03:13,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:03:13,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:03:13,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:03:13,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:03:13,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:03:13,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:03:13,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:03:13,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:03:13,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:13,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:03:13,740 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:03:13,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:03:13,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6d4a223111603731feae03c3b8e999e521ed8b7a92f24be8e01d0595b640900 [2022-11-26 01:03:14,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:03:14,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:03:14,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:03:14,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:03:14,071 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:03:14,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:17,132 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:03:17,418 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:03:17,419 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:17,432 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/1a1d61cba/d669c5645fee4d958c0c5ae15c956c41/FLAGfb6e2237b [2022-11-26 01:03:17,447 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/1a1d61cba/d669c5645fee4d958c0c5ae15c956c41 [2022-11-26 01:03:17,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:03:17,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:03:17,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:17,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:03:17,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:03:17,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:17" (1/1) ... [2022-11-26 01:03:17,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e830507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:17, skipping insertion in model container [2022-11-26 01:03:17,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:17" (1/1) ... [2022-11-26 01:03:17,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:03:17,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:03:17,649 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1107,1120] [2022-11-26 01:03:17,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:17,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:03:17,922 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1107,1120] [2022-11-26 01:03:17,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:18,011 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:03:18,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18 WrapperNode [2022-11-26 01:03:18,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:18,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:18,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:03:18,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:03:18,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,089 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 639 [2022-11-26 01:03:18,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:18,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:03:18,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:03:18,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:03:18,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:03:18,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:03:18,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:03:18,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:03:18,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (1/1) ... [2022-11-26 01:03:18,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:18,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:03:18,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:03:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:03:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:03:18,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:03:18,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:03:25,013 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:03:25,043 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:03:25,044 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:03:25,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:25 BoogieIcfgContainer [2022-11-26 01:03:25,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:03:25,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:03:25,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:03:25,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:03:25,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:03:17" (1/3) ... [2022-11-26 01:03:25,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1821897d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:25, skipping insertion in model container [2022-11-26 01:03:25,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:18" (2/3) ... [2022-11-26 01:03:25,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1821897d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:25, skipping insertion in model container [2022-11-26 01:03:25,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:25" (3/3) ... [2022-11-26 01:03:25,068 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:25,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:03:25,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:03:25,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:03:25,143 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43bd8a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:03:25,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:03:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:03:25,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:25,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:03:25,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:03:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 01:03:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:03:25,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019664487] [2022-11-26 01:03:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:03:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:25,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:03:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:25,522 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:03:25,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:03:25,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 01:03:25,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:03:25,531 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:03:25,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:03:25,555 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 01:03:25,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:03:25 BoogieIcfgContainer [2022-11-26 01:03:25,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:03:25,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:03:25,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:03:25,564 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:03:25,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:25" (3/4) ... [2022-11-26 01:03:25,567 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:03:25,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:03:25,569 INFO L158 Benchmark]: Toolchain (without parser) took 8117.67ms. Allocated memory was 159.4MB in the beginning and 373.3MB in the end (delta: 213.9MB). Free memory was 127.4MB in the beginning and 193.7MB in the end (delta: -66.3MB). Peak memory consumption was 150.3MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,569 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:25,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.03ms. Allocated memory is still 159.4MB. Free memory was 127.4MB in the beginning and 101.8MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.20ms. Allocated memory is still 159.4MB. Free memory was 101.8MB in the beginning and 94.8MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,571 INFO L158 Benchmark]: Boogie Preprocessor took 78.31ms. Allocated memory is still 159.4MB. Free memory was 94.8MB in the beginning and 91.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,572 INFO L158 Benchmark]: RCFGBuilder took 6877.63ms. Allocated memory was 159.4MB in the beginning and 373.3MB in the end (delta: 213.9MB). Free memory was 91.3MB in the beginning and 224.2MB in the end (delta: -132.9MB). Peak memory consumption was 161.0MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,573 INFO L158 Benchmark]: TraceAbstraction took 513.88ms. Allocated memory is still 373.3MB. Free memory was 223.1MB in the beginning and 193.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-26 01:03:25,573 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 373.3MB. Free memory is still 193.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:25,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.03ms. Allocated memory is still 159.4MB. Free memory was 127.4MB in the beginning and 101.8MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.20ms. Allocated memory is still 159.4MB. Free memory was 101.8MB in the beginning and 94.8MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.31ms. Allocated memory is still 159.4MB. Free memory was 94.8MB in the beginning and 91.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6877.63ms. Allocated memory was 159.4MB in the beginning and 373.3MB in the end (delta: 213.9MB). Free memory was 91.3MB in the beginning and 224.2MB in the end (delta: -132.9MB). Peak memory consumption was 161.0MB. Max. memory is 16.1GB. * TraceAbstraction took 513.88ms. Allocated memory is still 373.3MB. Free memory was 223.1MB in the beginning and 193.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 373.3MB. Free memory is still 193.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 157, overapproximation of bitwiseAnd at line 128. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L37] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 16); [L38] const SORT_22 msb_SORT_22 = (SORT_22)1 << (16 - 1); [L40] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 13); [L41] const SORT_68 msb_SORT_68 = (SORT_68)1 << (13 - 1); [L43] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 6); [L44] const SORT_71 msb_SORT_71 = (SORT_71)1 << (6 - 1); [L46] const SORT_73 mask_SORT_73 = (SORT_73)-1 >> (sizeof(SORT_73) * 8 - 10); [L47] const SORT_73 msb_SORT_73 = (SORT_73)1 << (10 - 1); [L49] const SORT_79 mask_SORT_79 = (SORT_79)-1 >> (sizeof(SORT_79) * 8 - 9); [L50] const SORT_79 msb_SORT_79 = (SORT_79)1 << (9 - 1); [L52] const SORT_81 mask_SORT_81 = (SORT_81)-1 >> (sizeof(SORT_81) * 8 - 7); [L53] const SORT_81 msb_SORT_81 = (SORT_81)1 << (7 - 1); [L55] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 12); [L56] const SORT_84 msb_SORT_84 = (SORT_84)1 << (12 - 1); [L58] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 4); [L59] const SORT_86 msb_SORT_86 = (SORT_86)1 << (4 - 1); [L61] const SORT_1 var_7 = 0; [L62] const SORT_10 var_12 = 0; [L63] const SORT_1 var_16 = 1; [L64] const SORT_22 var_23 = 8; [L65] const SORT_22 var_24 = 10; [L66] const SORT_3 var_25 = 1; [L67] const SORT_22 var_28 = 88; [L68] const SORT_22 var_29 = 584; [L69] const SORT_3 var_30 = 3; [L70] const SORT_3 var_33 = 2; [L71] const SORT_22 var_37 = 705; [L72] const SORT_22 var_38 = 611; [L73] const SORT_3 var_39 = 5; [L74] const SORT_22 var_42 = 50825; [L75] const SORT_3 var_43 = 7; [L76] const SORT_3 var_46 = 6; [L77] const SORT_3 var_50 = 4; [L78] const SORT_22 var_65 = 0; [L79] const SORT_3 var_67 = 0; [L80] const SORT_71 var_72 = 0; [L81] const SORT_5 var_76 = 1; [L82] const SORT_79 var_80 = 0; [L83] const SORT_84 var_85 = 0; [L84] const SORT_5 var_89 = 3; [L85] const SORT_5 var_92 = 2; [L86] const SORT_68 var_97 = 1; [L87] const SORT_22 var_100 = 32767; [L88] const SORT_5 var_105 = 0; [L89] const SORT_73 var_119 = 1; [L90] const SORT_81 var_131 = 1; [L91] const SORT_86 var_141 = 1; [L93] SORT_1 input_2; [L94] SORT_3 input_4; [L95] SORT_5 input_6; [L96] SORT_22 input_66; [L97] SORT_22 input_96; [L98] SORT_22 input_108; [L99] SORT_22 input_109; [L100] SORT_22 input_118; [L101] SORT_22 input_130; [L102] SORT_22 input_140; [L103] SORT_22 input_157; [L104] SORT_22 input_166; [L105] SORT_22 input_170; [L106] SORT_22 input_179; [L107] SORT_22 input_181; [L108] SORT_22 input_190; [L109] SORT_22 input_197; [L110] SORT_22 input_201; [L111] SORT_22 input_204; [L112] SORT_22 input_206; [L114] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_22 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_22; [L118] SORT_1 init_9_arg_1 = var_7; [L119] state_8 = init_9_arg_1 [L120] SORT_1 init_21_arg_1 = var_16; [L121] state_20 = init_21_arg_1 [L122] SORT_22 init_59_arg_1 = var_23; [L123] state_58 = init_59_arg_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_7=0, var_72=0, var_76=1, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L126] input_2 = __VERIFIER_nondet_uchar() [L127] input_4 = __VERIFIER_nondet_uchar() [L128] input_4 = input_4 & mask_SORT_3 [L129] input_6 = __VERIFIER_nondet_uchar() [L130] input_6 = input_6 & mask_SORT_5 [L131] input_66 = __VERIFIER_nondet_ushort() [L132] input_96 = __VERIFIER_nondet_ushort() [L133] input_108 = __VERIFIER_nondet_ushort() [L134] input_109 = __VERIFIER_nondet_ushort() [L135] input_118 = __VERIFIER_nondet_ushort() [L136] input_130 = __VERIFIER_nondet_ushort() [L137] input_140 = __VERIFIER_nondet_ushort() [L138] input_157 = __VERIFIER_nondet_ushort() [L139] input_166 = __VERIFIER_nondet_ushort() [L140] input_170 = __VERIFIER_nondet_ushort() [L141] input_179 = __VERIFIER_nondet_ushort() [L142] input_181 = __VERIFIER_nondet_ushort() [L143] input_190 = __VERIFIER_nondet_ushort() [L144] input_197 = __VERIFIER_nondet_ushort() [L145] input_201 = __VERIFIER_nondet_ushort() [L146] input_204 = __VERIFIER_nondet_ushort() [L147] input_206 = __VERIFIER_nondet_ushort() [L150] SORT_1 var_11_arg_0 = state_8; [L151] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L152] SORT_10 var_11 = var_11_arg_0; [L153] SORT_10 var_13_arg_0 = var_11; [L154] SORT_10 var_13_arg_1 = var_12; [L155] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L156] SORT_1 var_17_arg_0 = var_13; [L157] SORT_1 var_17 = ~var_17_arg_0; [L158] SORT_1 var_18_arg_0 = var_16; [L159] SORT_1 var_18_arg_1 = var_17; [L160] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L161] var_18 = var_18 & mask_SORT_1 [L162] SORT_1 bad_19_arg_0 = var_18; [L163] CALL __VERIFIER_assert(!(bad_19_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 01:03:25,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d6d4a223111603731feae03c3b8e999e521ed8b7a92f24be8e01d0595b640900 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:03:27,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:03:27,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:03:27,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:03:27,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:03:27,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:03:27,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:03:27,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:03:27,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:03:27,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:03:27,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:03:27,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:03:27,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:03:27,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:03:27,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:03:27,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:03:27,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:03:27,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:03:27,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:03:27,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:03:27,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:03:27,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:03:27,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:03:27,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:03:27,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:03:27,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:03:27,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:03:27,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:03:27,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:03:27,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:03:27,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:03:27,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:03:27,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:03:27,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:03:27,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:03:27,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:03:27,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:03:27,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:03:27,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:03:27,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:03:27,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:03:27,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 01:03:27,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:03:27,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:03:27,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:03:27,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:03:27,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:03:27,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:03:27,928 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:03:27,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:03:27,928 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:03:27,928 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:03:27,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:03:27,929 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:03:27,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:03:27,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:03:27,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:03:27,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:03:27,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:03:27,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:03:27,930 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:03:27,931 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:03:27,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:03:27,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:03:27,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:03:27,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:03:27,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:03:27,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:03:27,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:27,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:03:27,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:03:27,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:03:27,933 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6d4a223111603731feae03c3b8e999e521ed8b7a92f24be8e01d0595b640900 [2022-11-26 01:03:28,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:03:28,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:03:28,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:03:28,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:03:28,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:03:28,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:31,392 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:03:31,620 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:03:31,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:31,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/61991ba89/d7700cbf11034c7d889bc648f105b656/FLAG9af10519a [2022-11-26 01:03:31,654 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/data/61991ba89/d7700cbf11034c7d889bc648f105b656 [2022-11-26 01:03:31,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:03:31,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:03:31,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:31,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:03:31,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:03:31,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:31" (1/1) ... [2022-11-26 01:03:31,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389bce2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:31, skipping insertion in model container [2022-11-26 01:03:31,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:31" (1/1) ... [2022-11-26 01:03:31,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:03:31,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:03:31,968 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1107,1120] [2022-11-26 01:03:32,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:32,172 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:03:32,183 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1107,1120] [2022-11-26 01:03:32,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:32,272 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:03:32,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32 WrapperNode [2022-11-26 01:03:32,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:32,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:32,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:03:32,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:03:32,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,405 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 639 [2022-11-26 01:03:32,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:32,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:03:32,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:03:32,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:03:32,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:03:32,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:03:32,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:03:32,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:03:32,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (1/1) ... [2022-11-26 01:03:32,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:32,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:32,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:03:32,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:03:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:03:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:03:32,818 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:03:32,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:03:33,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:03:33,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:03:33,673 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:03:33,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:33 BoogieIcfgContainer [2022-11-26 01:03:33,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:03:33,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:03:33,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:03:33,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:03:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:03:31" (1/3) ... [2022-11-26 01:03:33,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2117664a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:33, skipping insertion in model container [2022-11-26 01:03:33,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:32" (2/3) ... [2022-11-26 01:03:33,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2117664a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:33, skipping insertion in model container [2022-11-26 01:03:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:33" (3/3) ... [2022-11-26 01:03:33,686 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2022-11-26 01:03:33,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:03:33,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:03:33,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:03:33,759 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f9362a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:03:33,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:03:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:03:33,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:33,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:03:33,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:03:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 01:03:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:33,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862511221] [2022-11-26 01:03:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:33,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:03:33,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:33,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:03:33,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 01:03:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:34,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-26 01:03:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:34,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:34,204 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862511221] [2022-11-26 01:03:34,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862511221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:34,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:34,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:34,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361641937] [2022-11-26 01:03:34,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:34,253 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:34,416 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 01:03:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:03:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:03:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:34,425 INFO L225 Difference]: With dead ends: 20 [2022-11-26 01:03:34,430 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 01:03:34,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:34,435 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:34,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:03:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 01:03:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 01:03:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 01:03:34,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 01:03:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:34,467 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 01:03:34,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 01:03:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:03:34,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:34,468 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:34,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:34,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:03:34,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:03:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 01:03:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:34,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933450141] [2022-11-26 01:03:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:34,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:03:34,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:34,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:03:34,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 01:03:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:35,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 01:03:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:35,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:35,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:35,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933450141] [2022-11-26 01:03:35,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933450141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:35,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810194451] [2022-11-26 01:03:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:35,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:03:35,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:03:35,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 01:03:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:36,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 01:03:36,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:36,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:36,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810194451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:36,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147820310] [2022-11-26 01:03:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:36,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:36,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:36,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:36,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:03:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:36,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 01:03:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:37,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:37,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147820310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:37,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:03:37,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-26 01:03:37,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125681942] [2022-11-26 01:03:37,299 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:03:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:03:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:37,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:03:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:03:37,302 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:37,571 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 01:03:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:03:37,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:03:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:37,573 INFO L225 Difference]: With dead ends: 16 [2022-11-26 01:03:37,573 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 01:03:37,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:03:37,575 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:37,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:03:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 01:03:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 01:03:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 01:03:37,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 01:03:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:37,580 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 01:03:37,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 01:03:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:03:37,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:37,581 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 01:03:37,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:37,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:37,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-26 01:03:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:38,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:03:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 01:03:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:38,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087012085] [2022-11-26 01:03:38,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:03:38,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:03:38,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:38,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:03:38,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4325e2a1-535e-4112-b4de-f425463d445a/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 01:03:38,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:03:38,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:03:38,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 345 conjunts are in the unsatisfiable core [2022-11-26 01:03:39,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:05:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:05:07,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:05:39,023 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 416 DAG size of output: 270 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)